yeah I also think that the signature campaign only as a side job that very profitable
I dont think it would be better than making a stable income but it definitely could help you out a lot with just secondary funds or if you really needed it for a bill or something to scrounge up really easily to get that one thing that you need paid off.
Good luck using it as a full time job though you will never make enough unless you dont pay for living expenses.
Bitcoin is always good as an secondary income and it can never replace primary income for sure, better try to earn from both of them to have good and secured life ahead.
So I suggest that you do it on the side next to a normal job.